CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 345 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which element does the selector .big style? (a) <h1 class="box"> (b) <p class="big"> (c) <p class="red"> (d) <p id="big">
2. 2.🎯 Which sign starts an id selector? (a) & (b) . (c) @ (d) #
3. 3.🎯 Which element does the selector .menu style? (a) <div class="big"> (b) <li class="menu"> (c) <li id="menu"> (d) <li class="note">
4. 4.True or false: .big is a class selector. (a) True (b) False
5. 5.🎯 Which element does the selector span style? (a) <h1 class="menu"> (b) <p> (c) <span class="menu"> (d) <h2 id="end">
6. 6.🎯 Which CSS selector matches this element?
   <div class="red" id="intro">Hello</div> (a) #red (b) .red (c) .intro (d) span
7. 7.🎯 Which element does the selector .red style? (a) <h2 class="star"> (b) <h1 class="box"> (c) <h1 class="red"> (d) <h1 id="red">
8. 8.🎯 What kind of selector is h1? (a) an id selector (b) a class selector (c) an element selector
9. 9.🎯 Which element does the selector .note style? (a) <div class="big"> (b) <span class="red"> (c) <div class="note"> (d) <div id="note">
10. 10.🎯 Which CSS selector matches this element?
    <h1 class="note" id="top">Hello</h1> (a) .big (b) h1 (c) #intro (d) #note
11. 11.🎯 Which sign starts a class selector? (a) & (b) . (c) # (d) @
12. 12.True or false: .menu is a class selector. (a) False (b) True
13. 13.🎯 Which element does the selector .big style? (a) <h2 id="big"> (b) <h2 class="red"> (c) <h2 class="big"> (d) <li class="box">
14. 14.True or false: #logo is an element selector. (a) False (b) True
15. 15.🎯 Which element does the selector h1 style? (a) <li class="red"> (b) <h2> (c) <h1 class="red"> (d) <div id="top">
16. 16.🎯 Which element does the selector #main style? (a) <li class="main"> (b) <li id="logo"> (c) <li id="main"> (d) <div class="note">
17. 17.True or false: .big is an id selector. (a) True (b) False
18. 18.🎯 What kind of selector is img? (a) an id selector (b) a class selector (c) an element selector
19. 19.🎯 Which CSS selector matches this element?
    <div class="menu" id="end">Hello</div> (a) #hero (b) span (c) div (d) #menu
20. 20.🎯 How many elements on a page should have the same id? (a) 5 (b) 1 (c) 2 (d) any number
21. 21.🎯 Which element does the selector .note style? (a) <h1 class="note"> (b) <h1 class="big"> (c) <h1 id="note"> (d) <h2 class="red">
22. 22.True or false: #main is a class selector. (a) True (b) False
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) .end (b) .menu (c) h1 (d) #hero
24. 24.🎯 What kind of selector is .card? (a) an element selector (b) an id selector (c) a class selector
25. 25.🎯 Which element does the selector #intro style? (a) <div id="intro"> (b) <span class="box"> (c) <div id="main"> (d) <div class="intro">
26. 26.🎯 Which element does the selector p style? (a) <p class="box"> (b) <li id="top"> (c) <h2 class="box"> (d) <h1>
27. 27.🎯 What kind of selector is .big? (a) an id selector (b) an element selector (c) a class selector
28. 28.🎯 Which element does the selector #logo style? (a) <h1 class="logo"> (b) <h1 id="logo"> (c) <h1 id="end"> (d) <h2 class="menu">
29. 29.🎯 What kind of selector is #top? (a) a class selector (b) an element selector (c) an id selector
30. 30.True or false: img is an element selector. (a) False (b) True
31. 31.🎯 What kind of selector is .menu? (a) an id selector (b) an element selector (c) a class selector
32. 32.True or false: #end is a class selector. (a) False (b) True
33. 33.True or false: #main is an element selector. (a) True (b) False
34. 34.🎯 What kind of selector is body? (a) an element selector (b) a class selector (c) an id selector
35. 35.🎯 Which CSS selector matches this element?
    <div class="box" id="intro">Hello</div> (a) .star (b) #main (c) #intro (d) #box
36. 36.🎯 Which CSS selector matches this element?
    <h2 class="menu" id="intro">Hello</h2> (a) .note (b) h2 (c) li (d) .intro
37. 37.True or false: #logo is a class selector. (a) True (b) False
38. 38.🎯 What kind of selector is .star? (a) an id selector (b) an element selector (c) a class selector
39. 39.🎯 Which element does the selector .star style? (a) <div id="star"> (b) <div class="menu"> (c) <div class="star"> (d) <span class="note">
40. 40.🎯 Can many elements share the same class? (a) No (b) Yes

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